Green Lantern Corps #21
| Series | Green Lantern Corps |
| Number | #21 |
| Publisher | DC Comics |
| Date | 2008-04 |
| Type | Comic Book, Softcover |
| Language | English |
| UPC | 7 61941 24955 1 02111 |
| Notes | [front cover] Countdown 11 $2.99 US $3.65 CAN |
Added by DrBoots
| Series | Green Lantern Corps |
| Number | #21 |
| Publisher | DC Comics |
| Date | 2008-04 |
| Type | Comic Book, Softcover |
| Language | English |
| UPC | 7 61941 24955 1 02111 |
| Notes | [front cover] Countdown 11 $2.99 US $3.65 CAN |